Oil steam?
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Oil steam?

  1. #1
    What the Hell is That? 72Hondo's Avatar
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    Default Oil steam?

    So I was reading Lucky stiff's thread and didn't want to hijack. Last time out boat ran fine minus some carb issues but I noticed steam coming out of the Breathers. Plus it had a fine mist of Oil coming out from under the valve covers. Is the Oil getting too hot? or is there too much pressure in there and the oil is just finding a way out? The oil Pressure was fine the whole time.
    Quote Originally Posted by Kyle View Post
    Log off and go float, hang in the party coves, Show and shine on the trailer, fill up the boat, wax it, v-drive, jet, outdrive, and if you got a canoe and your reading this, you sir, need to phucking upgrade.

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    Default Got milk?

    Quote Originally Posted by Btnhtillidie View Post
    So I was reading Lucky stiff's thread and didn't want to hijack. Last time out boat ran fine minus some carb issues but I noticed steam coming out of the Breathers. Plus it had a fine mist of Oil coming out from under the valve covers. Is the Oil getting too hot? or is there too much pressure in there and the oil is just finding a way out? The oil Pressure was fine the whole time.
    Any milk in the covers??? OIL doesn't "steam".....Or is it blow by?......And how does oil "mist" come out from under the valve covers?......Ray
    LOUD BOATS SAVE LIVES

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    Resident Ford Nut Sleeper CP's Avatar
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    Quote Originally Posted by Btnhtillidie View Post
    So I was reading Lucky stiff's thread and didn't want to hijack. Last time out boat ran fine minus some carb issues but I noticed steam coming out of the Breathers. Plus it had a fine mist of Oil coming out from under the valve covers. Is the Oil getting too hot? or is there too much pressure in there and the oil is just finding a way out? The oil Pressure was fine the whole time.
    As was stated in the other thread you may want to do a leak-down.

    I had more pressure than normal once did a leak-down everything showed fine but I knew something was not right and I remembered I had forgot to re-trq the heads after a trip to the river. Yep the normal 150 ft lbs was down to 110 ft lbs. Re-trq'd them and next trip every thing was fine. This has happened twice in 20+ yrs of boating.

    I'd try a leak-down and see what you get.

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    Quote Originally Posted by Moneypit View Post
    Any milk in the covers??? OIL doesn't "steam".....Or is it blow by?......And how does oil "mist" come out from under the valve covers?......Ray
    X2

    What engine is in your boat Btnhtillidie?

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    What the Hell is That? 72Hondo's Avatar
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    I plan on doing a leak down test this week. When I said mist I meant fine spraying of oil out form under the valve covers. Not a lot but just enough to let you know. Also no milkshake under the valve covers oil looks nice and purple (I run Royal Purple) If oil does not steam where was the steam coming from? Water temp was fine around 150* or so.
    Quote Originally Posted by Kyle View Post
    Log off and go float, hang in the party coves, Show and shine on the trailer, fill up the boat, wax it, v-drive, jet, outdrive, and if you got a canoe and your reading this, you sir, need to phucking upgrade.

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    What the Hell is That? 72Hondo's Avatar
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    Quote Originally Posted by hotrod56cars View Post
    X2

    What engine is in your boat Btnhtillidie?
    Its a lil 327 .30 over forged internals, roller rockers, with a 144 atop of it.

    There is no sign anywhere of water in the valve covers.
    Quote Originally Posted by Kyle View Post
    Log off and go float, hang in the party coves, Show and shine on the trailer, fill up the boat, wax it, v-drive, jet, outdrive, and if you got a canoe and your reading this, you sir, need to phucking upgrade.

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    How long has it been since the boat was run before the recent trip? Could it simply be burning off condensation in the oil and engine?




    Darrell.
    San Diego.

    28ft Sportcat
    With Twins

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    What the Hell is That? 72Hondo's Avatar
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    Quote Originally Posted by DMOORE View Post
    How long has it been since the boat was run before the recent trip? Could it simply be burning off condensation in the oil and engine?
    Darrell.
    ohhh thats a good one. Damn I didn't even think of that, That was it maiden voyage since Aug/OCT. First trip of this year.
    Quote Originally Posted by Kyle View Post
    Log off and go float, hang in the party coves, Show and shine on the trailer, fill up the boat, wax it, v-drive, jet, outdrive, and if you got a canoe and your reading this, you sir, need to phucking upgrade.

  11. #9
    Senior Member jetboatperformance's Avatar
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    Alot depends on Alot! the steam/mist is likely due to some crancase pressure , and the little blower just aggravates the problem make sure the VCs are "baffled and put the biggest breathers on it you can ,throw on a Puke tank and call it good Call if I can help Tom

    PS have the same problem on my Family boat:

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    New here Beer:30's Avatar
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    Yes, being supercharged you are definitely having some crankcase pressure/blow-by. There can be oil steam/smoke from breathers as the oil temp is usually a bit higher than engine temp. Especially a supercharged motor; I would not be surprised if you are in the 200* range. There will always be some steam at those temps.

    There should NOT be any oil MIST, though. If there is, there is too much pressure and it's pushing the oil out of the motor. Check the crank seals front and rear also. This much pressure usually pushes some out of them.
    Quote Originally Posted by gn7 View Post
    EFI is the wave of the future. There can be no denying it. Electronics have been on the leading edge of our entire lives. Not only os the magneto dead, but the standard issue CDI is wavering. Its all about total fuel, air AND spark control. Anybody that thinks its not has their head up their ass.


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